Remarks

St7735
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.Displays.TftSpi

The ST7735 is a display controller used to drive color displays over SPI using 12, 16 or 18 bbp. These displays require a backlight. These displays are commonly found with a resolution of 128x160.

The Meadow.Foundation ST7735 driver currently only supports 16bpp RGB565.

Code Example

MicroGraphics graphics;

public override Task Initialize()
{
    Resolver.Log.Info("Initializing ...");

    var spiBus = Device.CreateSpiBus();

    //note - you may need to adjust the DisplayType for your specific St7735
    var display = new St7735(
        spiBus: spiBus,
        chipSelectPin: Device.Pins.D02,
        dcPin: Device.Pins.D01,
        resetPin: Device.Pins.D00,
        width: 128,
        height: 160,
        St7735.DisplayType.ST7735R);

    graphics = new MicroGraphics(display);

    return base.Initialize();
}

public override Task Run()
{
    graphics.Clear();

    graphics.DrawCircle(60, 60, 20, Color.Purple);
    graphics.DrawRectangle(10, 10, 30, 60, Color.Red);
    graphics.DrawTriangle(20, 20, 10, 70, 60, 60, Color.Green);

    graphics.DrawCircle(90, 60, 20, Color.Cyan, true);
    graphics.DrawRectangle(100, 100, 30, 10, Color.Yellow, true);
    graphics.DrawTriangle(120, 20, 110, 70, 160, 60, Color.Pink, true);

    graphics.DrawLine(10, 120, 110, 130, Color.SlateGray);

    graphics.Show();

    return base.Run();
}

Sample project(s) available on GitHub

Wiring Example

To wire a ST7735 to your Meadow board, connect the following:

ST7735 Meadow Pin
LED- 3V3
LED+ GND
MOSI MOSI
SCK SCK
RESET D15
A0 D14
CS D13
VCC 3V3
GND GND

It should look like the following diagram:

Wiring a ST7735 to a Meadow F7

Characteristic Locus
Inheritance object TftSpiBase > St7735
Implements IGraphicsDisplay ISpiPeripheral IDisposable
Inherited Members TftSpiBase.SetAddressBuffer TftSpiBase.ColorMode TftSpiBase.Rotation TftSpiBase.Width TftSpiBase.Height TftSpiBase.PixelBuffer TftSpiBase.DefaultSpiBusSpeed TftSpiBase.SpiBusSpeed TftSpiBase.DefaultSpiBusMode TftSpiBase.SpiBusMode TftSpiBase.IsDisposed TftSpiBase.dataCommandPort TftSpiBase.resetPort TftSpiBase.chipSelectPort TftSpiBase.spiDisplay TftSpiBase.imageBuffer TftSpiBase.readBuffer TftSpiBase.Data TftSpiBase.Command TftSpiBase.nativeHeight TftSpiBase.nativeWidth TftSpiBase.setAddressLastX0 TftSpiBase.setAddressLastX1 TftSpiBase.setAddressLastY0 TftSpiBase.setAddressLastY1 TftSpiBase.IsColorTypeSupported(ColorMode) TftSpiBase.CreateBuffer(ColorMode, int, int) TftSpiBase.Clear(bool) TftSpiBase.Fill(Color, bool) TftSpiBase.WriteBuffer(int, int, IPixelBuffer) TftSpiBase.DrawPixel(int, int, bool) TftSpiBase.DrawPixel(int, int, Color) TftSpiBase.DrawPixel(int, int, byte, byte, byte) TftSpiBase.InvertPixel(int, int) TftSpiBase.Fill(int, int, int, int, Color) TftSpiBase.Show() TftSpiBase.Show(int, int, int, int) TftSpiBase.Write(byte) TftSpiBase.Write(byte[]) TftSpiBase.DelayMs(int) TftSpiBase.SendCommand(TftSpiBase.Register) TftSpiBase.SendCommand(TftSpiBase.LcdCommand) TftSpiBase.SendCommand(byte) TftSpiBase.SendData(int) TftSpiBase.SendData(byte) TftSpiBase.SendData(byte[]) TftSpiBase.Clear(Color) TftSpiBase.UpdateBuffer() TftSpiBase.Dispose() TftSpiBase.Dispose(bool) object.Equals(object) object.Equals(object, object) object.GetHashCode() object.GetType() object.MemberwiseClone() object.ReferenceEquals(object, object) object.ToString()
Namespace Meadow.Foundation.Displays
Assembly TftSpi.dll

Syntax

public class St7735 : TftSpiBase, IGraphicsDisplay, ISpiPeripheral, IDisposable

Constructors

St7735(ISpiBus, IDigitalOutputPort, IDigitalOutputPort, IDigitalOutputPort, int, int, DisplayType, ColorMode)

Create a new St7735 color display object

Declaration
public St7735(ISpiBus spiBus, IDigitalOutputPort chipSelectPort, IDigitalOutputPort dataCommandPort, IDigitalOutputPort resetPort, int width, int height, St7735.DisplayType displayType = DisplayType.ST7735R, ColorMode colorMode = ColorMode.Format12bppRgb444)

Parameters

Type Name Description
ISpiBus spiBus

SPI bus connected to display
IDigitalOutputPort chipSelectPort

Chip select output port
IDigitalOutputPort dataCommandPort

Data command output port
IDigitalOutputPort resetPort

Reset output port
int width

Width of display in pixels
int height

Height of display in pixels
St7735.DisplayType displayType

The St7735 display types (displays vary from manufacturer and screen size)
ColorMode colorMode

The color mode to use for the display buffer

Remarks

St7735
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.Displays.TftSpi

The ST7735 is a display controller used to drive color displays over SPI using 12, 16 or 18 bbp. These displays require a backlight. These displays are commonly found with a resolution of 128x160.

The Meadow.Foundation ST7735 driver currently only supports 16bpp RGB565.

Code Example

MicroGraphics graphics;

public override Task Initialize()
{
    Resolver.Log.Info("Initializing ...");

    var spiBus = Device.CreateSpiBus();

    //note - you may need to adjust the DisplayType for your specific St7735
    var display = new St7735(
        spiBus: spiBus,
        chipSelectPin: Device.Pins.D02,
        dcPin: Device.Pins.D01,
        resetPin: Device.Pins.D00,
        width: 128,
        height: 160,
        St7735.DisplayType.ST7735R);

    graphics = new MicroGraphics(display);

    return base.Initialize();
}

public override Task Run()
{
    graphics.Clear();

    graphics.DrawCircle(60, 60, 20, Color.Purple);
    graphics.DrawRectangle(10, 10, 30, 60, Color.Red);
    graphics.DrawTriangle(20, 20, 10, 70, 60, 60, Color.Green);

    graphics.DrawCircle(90, 60, 20, Color.Cyan, true);
    graphics.DrawRectangle(100, 100, 30, 10, Color.Yellow, true);
    graphics.DrawTriangle(120, 20, 110, 70, 160, 60, Color.Pink, true);

    graphics.DrawLine(10, 120, 110, 130, Color.SlateGray);

    graphics.Show();

    return base.Run();
}

Sample project(s) available on GitHub

Wiring Example

To wire a ST7735 to your Meadow board, connect the following:

ST7735 Meadow Pin
LED- 3V3
LED+ GND
MOSI MOSI
SCK SCK
RESET D15
A0 D14
CS D13
VCC 3V3
GND GND

It should look like the following diagram:

Wiring a ST7735 to a Meadow F7

St7735(ISpiBus, IPin, IPin, IPin, int, int, DisplayType, ColorMode)

Create a new St7735 color display object

Declaration
public St7735(ISpiBus spiBus, IPin chipSelectPin, IPin dcPin, IPin resetPin, int width, int height, St7735.DisplayType displayType = DisplayType.ST7735R, ColorMode colorMode = ColorMode.Format12bppRgb444)

Parameters

Type Name Description
ISpiBus spiBus

SPI bus connected to display
IPin chipSelectPin

Chip select pin
IPin dcPin

Data command pin
IPin resetPin

Reset pin
int width

Width of display in pixels
int height

Height of display in pixels
St7735.DisplayType displayType

The St7735 display types (displays vary from manufacturer and screen size)
ColorMode colorMode

The color mode to use for the display buffer

Remarks

St7735
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.Displays.TftSpi

The ST7735 is a display controller used to drive color displays over SPI using 12, 16 or 18 bbp. These displays require a backlight. These displays are commonly found with a resolution of 128x160.

The Meadow.Foundation ST7735 driver currently only supports 16bpp RGB565.

Code Example

MicroGraphics graphics;

public override Task Initialize()
{
    Resolver.Log.Info("Initializing ...");

    var spiBus = Device.CreateSpiBus();

    //note - you may need to adjust the DisplayType for your specific St7735
    var display = new St7735(
        spiBus: spiBus,
        chipSelectPin: Device.Pins.D02,
        dcPin: Device.Pins.D01,
        resetPin: Device.Pins.D00,
        width: 128,
        height: 160,
        St7735.DisplayType.ST7735R);

    graphics = new MicroGraphics(display);

    return base.Initialize();
}

public override Task Run()
{
    graphics.Clear();

    graphics.DrawCircle(60, 60, 20, Color.Purple);
    graphics.DrawRectangle(10, 10, 30, 60, Color.Red);
    graphics.DrawTriangle(20, 20, 10, 70, 60, 60, Color.Green);

    graphics.DrawCircle(90, 60, 20, Color.Cyan, true);
    graphics.DrawRectangle(100, 100, 30, 10, Color.Yellow, true);
    graphics.DrawTriangle(120, 20, 110, 70, 160, 60, Color.Pink, true);

    graphics.DrawLine(10, 120, 110, 130, Color.SlateGray);

    graphics.Show();

    return base.Run();
}

Sample project(s) available on GitHub

Wiring Example

To wire a ST7735 to your Meadow board, connect the following:

ST7735 Meadow Pin
LED- 3V3
LED+ GND
MOSI MOSI
SCK SCK
RESET D15
A0 D14
CS D13
VCC 3V3
GND GND

It should look like the following diagram:

Wiring a ST7735 to a Meadow F7

Properties

DefaultColorMode

The default display color mode

Declaration
public override ColorMode DefaultColorMode { get; }

Property Value

Type Description
ColorMode

Overrides

Remarks

St7735
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.Displays.TftSpi

The ST7735 is a display controller used to drive color displays over SPI using 12, 16 or 18 bbp. These displays require a backlight. These displays are commonly found with a resolution of 128x160.

The Meadow.Foundation ST7735 driver currently only supports 16bpp RGB565.

Code Example

MicroGraphics graphics;

public override Task Initialize()
{
    Resolver.Log.Info("Initializing ...");

    var spiBus = Device.CreateSpiBus();

    //note - you may need to adjust the DisplayType for your specific St7735
    var display = new St7735(
        spiBus: spiBus,
        chipSelectPin: Device.Pins.D02,
        dcPin: Device.Pins.D01,
        resetPin: Device.Pins.D00,
        width: 128,
        height: 160,
        St7735.DisplayType.ST7735R);

    graphics = new MicroGraphics(display);

    return base.Initialize();
}

public override Task Run()
{
    graphics.Clear();

    graphics.DrawCircle(60, 60, 20, Color.Purple);
    graphics.DrawRectangle(10, 10, 30, 60, Color.Red);
    graphics.DrawTriangle(20, 20, 10, 70, 60, 60, Color.Green);

    graphics.DrawCircle(90, 60, 20, Color.Cyan, true);
    graphics.DrawRectangle(100, 100, 30, 10, Color.Yellow, true);
    graphics.DrawTriangle(120, 20, 110, 70, 160, 60, Color.Pink, true);

    graphics.DrawLine(10, 120, 110, 130, Color.SlateGray);

    graphics.Show();

    return base.Run();
}

Sample project(s) available on GitHub

Wiring Example

To wire a ST7735 to your Meadow board, connect the following:

ST7735 Meadow Pin
LED- 3V3
LED+ GND
MOSI MOSI
SCK SCK
RESET D15
A0 D14
CS D13
VCC 3V3
GND GND

It should look like the following diagram:

Wiring a ST7735 to a Meadow F7

SupportedColorModes

The color modes supported by the display

Declaration
public override ColorMode SupportedColorModes { get; }

Property Value

Type Description
ColorMode

Overrides

Remarks

St7735
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.Displays.TftSpi

The ST7735 is a display controller used to drive color displays over SPI using 12, 16 or 18 bbp. These displays require a backlight. These displays are commonly found with a resolution of 128x160.

The Meadow.Foundation ST7735 driver currently only supports 16bpp RGB565.

Code Example

MicroGraphics graphics;

public override Task Initialize()
{
    Resolver.Log.Info("Initializing ...");

    var spiBus = Device.CreateSpiBus();

    //note - you may need to adjust the DisplayType for your specific St7735
    var display = new St7735(
        spiBus: spiBus,
        chipSelectPin: Device.Pins.D02,
        dcPin: Device.Pins.D01,
        resetPin: Device.Pins.D00,
        width: 128,
        height: 160,
        St7735.DisplayType.ST7735R);

    graphics = new MicroGraphics(display);

    return base.Initialize();
}

public override Task Run()
{
    graphics.Clear();

    graphics.DrawCircle(60, 60, 20, Color.Purple);
    graphics.DrawRectangle(10, 10, 30, 60, Color.Red);
    graphics.DrawTriangle(20, 20, 10, 70, 60, 60, Color.Green);

    graphics.DrawCircle(90, 60, 20, Color.Cyan, true);
    graphics.DrawRectangle(100, 100, 30, 10, Color.Yellow, true);
    graphics.DrawTriangle(120, 20, 110, 70, 160, 60, Color.Pink, true);

    graphics.DrawLine(10, 120, 110, 130, Color.SlateGray);

    graphics.Show();

    return base.Run();
}

Sample project(s) available on GitHub

Wiring Example

To wire a ST7735 to your Meadow board, connect the following:

ST7735 Meadow Pin
LED- 3V3
LED+ GND
MOSI MOSI
SCK SCK
RESET D15
A0 D14
CS D13
VCC 3V3
GND GND

It should look like the following diagram:

Wiring a ST7735 to a Meadow F7

Methods

Initialize()

Initialize the display

Declaration
protected override void Initialize()

Overrides

Remarks

St7735
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.Displays.TftSpi

The ST7735 is a display controller used to drive color displays over SPI using 12, 16 or 18 bbp. These displays require a backlight. These displays are commonly found with a resolution of 128x160.

The Meadow.Foundation ST7735 driver currently only supports 16bpp RGB565.

Code Example

MicroGraphics graphics;

public override Task Initialize()
{
    Resolver.Log.Info("Initializing ...");

    var spiBus = Device.CreateSpiBus();

    //note - you may need to adjust the DisplayType for your specific St7735
    var display = new St7735(
        spiBus: spiBus,
        chipSelectPin: Device.Pins.D02,
        dcPin: Device.Pins.D01,
        resetPin: Device.Pins.D00,
        width: 128,
        height: 160,
        St7735.DisplayType.ST7735R);

    graphics = new MicroGraphics(display);

    return base.Initialize();
}

public override Task Run()
{
    graphics.Clear();

    graphics.DrawCircle(60, 60, 20, Color.Purple);
    graphics.DrawRectangle(10, 10, 30, 60, Color.Red);
    graphics.DrawTriangle(20, 20, 10, 70, 60, 60, Color.Green);

    graphics.DrawCircle(90, 60, 20, Color.Cyan, true);
    graphics.DrawRectangle(100, 100, 30, 10, Color.Yellow, true);
    graphics.DrawTriangle(120, 20, 110, 70, 160, 60, Color.Pink, true);

    graphics.DrawLine(10, 120, 110, 130, Color.SlateGray);

    graphics.Show();

    return base.Run();
}

Sample project(s) available on GitHub

Wiring Example

To wire a ST7735 to your Meadow board, connect the following:

ST7735 Meadow Pin
LED- 3V3
LED+ GND
MOSI MOSI
SCK SCK
RESET D15
A0 D14
CS D13
VCC 3V3
GND GND

It should look like the following diagram:

Wiring a ST7735 to a Meadow F7

SetAddressWindow(int, int, int, int)

Set address window for display updates

Declaration
protected override void SetAddressWindow(int x0, int y0, int x1, int y1)

Parameters

Type Name Description
int x0

X start in pixels
int y0

Y start in pixels
int x1

X end in pixels
int y1

Y end in pixels

Overrides

Remarks

St7735
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.Displays.TftSpi

The ST7735 is a display controller used to drive color displays over SPI using 12, 16 or 18 bbp. These displays require a backlight. These displays are commonly found with a resolution of 128x160.

The Meadow.Foundation ST7735 driver currently only supports 16bpp RGB565.

Code Example

MicroGraphics graphics;

public override Task Initialize()
{
    Resolver.Log.Info("Initializing ...");

    var spiBus = Device.CreateSpiBus();

    //note - you may need to adjust the DisplayType for your specific St7735
    var display = new St7735(
        spiBus: spiBus,
        chipSelectPin: Device.Pins.D02,
        dcPin: Device.Pins.D01,
        resetPin: Device.Pins.D00,
        width: 128,
        height: 160,
        St7735.DisplayType.ST7735R);

    graphics = new MicroGraphics(display);

    return base.Initialize();
}

public override Task Run()
{
    graphics.Clear();

    graphics.DrawCircle(60, 60, 20, Color.Purple);
    graphics.DrawRectangle(10, 10, 30, 60, Color.Red);
    graphics.DrawTriangle(20, 20, 10, 70, 60, 60, Color.Green);

    graphics.DrawCircle(90, 60, 20, Color.Cyan, true);
    graphics.DrawRectangle(100, 100, 30, 10, Color.Yellow, true);
    graphics.DrawTriangle(120, 20, 110, 70, 160, 60, Color.Pink, true);

    graphics.DrawLine(10, 120, 110, 130, Color.SlateGray);

    graphics.Show();

    return base.Run();
}

Sample project(s) available on GitHub

Wiring Example

To wire a ST7735 to your Meadow board, connect the following:

ST7735 Meadow Pin
LED- 3V3
LED+ GND
MOSI MOSI
SCK SCK
RESET D15
A0 D14
CS D13
VCC 3V3
GND GND

It should look like the following diagram:

Wiring a ST7735 to a Meadow F7